Question

A company recently added an addition to their office building. A technician runs new plenum network cables from the switch on one side of the company's gymnasium 80 meters (262 ft.) to the new offices on the other side, draping the wires across the light fixtures. Users working out of the new offices in the addition complain of intermittent network connectivity. Which of the following is MOST likely the cause of the connectivity issue?

a.crosstalk
b.distance
c.emi
d.db loss
e.incorrect connector type

Answer 1

The intermittent network connectivity issues are most likely caused by electromagnetic interference (EMI) from the gym's light fixtures where the cables are draped.

Correct option is c. EMI (Electromagnetic Interference)

Step-by-step explanation:

The most likely cause of the intermittent network connectivity issues in the new office addition is electromagnetic interference (EMI). The technician ran the cables across the gym's light fixtures, which likely generate EMI, disrupting signal transmission. Although crosstalk and distance could be factors, they are less probable given the described scenario. Crosstalk usually occurs between adjacent cables, and the distance of 80 meters is within the acceptable range for most network cables (which is typically up to 100 meters for Ethernet).

DB loss, or signal attenuation, could contribute to the problem but is usually associated with longer distances. Lastly, the incorrect connector type would normally cause a consistent, not intermittent, connectivity issue.